/* Copyright  2009
   @Author
   Richard Changde Yin            e-mail yinchangde@hotmail.com

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; version 2 of the License.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
   
/**
 * @filename: item/int.h
 */ 
#ifndef COLLAPSAR_ITEM_INT_H
#define COLLAPSAR_ITEM_INT_H

#include <item/num.h>

class Item_int :public Item_num
{
public:
  int64_t value;
  Item_int(int32_t i,uint32_t   length= COLLAPSAR_INT32_NUM_DECIMAL_DIGITS)
    :value((int64_t) i)
    { max_length=length; fixed= 1; }
  Item_int(int64_t i,uint32_t   length= COLLAPSAR_INT64_NUM_DECIMAL_DIGITS)
    :value(i)
    { max_length=length; fixed= 1; }
  Item_int(uint64_t i, uint32_t length= COLLAPSAR_INT64_NUM_DECIMAL_DIGITS)
    :value((int64_t)i)
  { max_length=length; fixed=1; }
  
  Item_int(const char *str_arg,int64_t i,uint32_t length) :value(i)
    { max_length=length; name=(char*) str_arg; fixed= 1; }
    
  Item_int(const char *str_arg, uint32_t length=64);
  
  enum Type type() const { return INT_ITEM; }
  
  enum Item_result result_type () const { return INT_RESULT; }
  
  enum_field_types field_type() const { return COLLAPSAR_TYPE_LONGLONG; }
  
  int64_t val_int() { assert(fixed == 1); return value; }
  
  double val_real() { assert(fixed == 1); return (double) value; }
  
  my_decimal *val_decimal(my_decimal *);
  
  String *val_str(String*);
  
  int save_in_field(Field *field, bool no_conversions);
  
  bool basic_const_item() const { return 1; }
  
  Item *clone_item() { return new Item_int(name,value,max_length); }
  
  virtual void print(String *str, enum_query_type query_type);
  
  Item_num *neg() { value= -value; return this; }
  
  uint32_t decimal_precision() const
  { return (uint32_t)(max_length - test(value < 0)); }
  
  bool eq(const Item *, bool binary_cmp)  const;
  
  bool check_vcol_func_processor(unsigned char *)
  { return false; }
};

#endif /* COLLAPSAR_ITEM_INT_H */
